AltiGen to Announce Fiscal 2009 Fourth Quarter and Year-End Financial Results on November 18, 2009

SAN JOSE, CA--(Marketwire - November 4, 2009) - AltiGen Communications, Inc. (NASDAQ: ATGN), a leading provider of 100 percent Microsoft-based VoIP business phone systems and Unified Communications solutions, will announce its fiscal 2009 fourth quarter and full-year financial results after the close of regular market trading on Wednesday, November 18, 2009. The Company will also hold a conference call to discuss the results at 2:00 p.m. Pacific Time (5:00 p.m. ET).

What:   AltiGen Fiscal 2009 Fourth Quarter and Year-End Conference Call

When:   Wednesday, November 18th at 2:00 p.m. Pacific Time (5:00 p.m. ET)

Who:    Jerry Fleming, President and Chief Operating Officer and Phil
        McDermott, Chief Financial Officer

How:    Dial (800) 862-9098 (domestic) or (785) 424-1051 (international) to
        listen in to the call.  The conference call ID is "AltiGen." A live
        webcast will also be made available at www.altigen.com. A
        telephonic replay will be available approximately one hour after
        the call through November 20, 2009. To access the replay, dial
        (800) 695-0715 (domestic) or (402) 220-1423 (international). A Web
        archive will be made available at www.altigen.com for 90 days
        following the call's conclusion.

About AltiGen Communications

AltiGen Communications, Inc. (NASDAQ: ATGN) is a leading provider of 100 percent Microsoft-based VoIP business phone systems and Unified Communications solutions. Having more than 10,000 customers around the world, AltiGen solutions are designed for high reliability, ease of use, seamless integration to Microsoft infrastructure technologies, and are built on a scalable, open standards platform. AltiGen's worldwide headquarters is in Silicon Valley, California, with international operations based in Shanghai, China. Local sales, service and support are provided by AltiGen's worldwide network of over 300 certified partners. For more information, call 1-888-ALTIGEN or visit the web site at www.altigen.com.